CVE-2024-39929

Exim through 4.97.1 misparses a multiline RFC 2231 header filename, and thus remote attackers can bypass a $mime_filename extension-blocking protection mechanism, and potentially deliver executable attachments to the mailboxes of end users.

CVSS v3.1

5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

EPSS

41.23% chance of exploitation in the next 30 days, 99th percentile

Published

2024-07-04

Updated

2025-03-18

Proof-of-concept exploits (2)

• michael-david-fry/CVE-2024-399294★ · 2024-08-01
• rxerium/CVE-2024-399293★ · 2025-10-14

References

• CVE Record
• NVD entry

Related

• CVE-2023-22622
• CVE-2025-24813
• CVE-2022-24086
• CVE-2022-41352
• CVE-2023-22515
• CVE-2023-40000